首页|β-adrenoreceptor-triggered PKA activation negatively regulates the innate antiviral response
β-adrenoreceptor-triggered PKA activation negatively regulates the innate antiviral response
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Upon viral infection,cytoplasmic pattern recognition receptors detect viral nucleic acids and activate the adaptor protein VISA/MAVS-or MITA/STING-mediated innate antiviral response.Whether and how the innate antiviral response is regulated by neuronal endocrine functions is unclear.Here,we show that viral infection reduced the serum levels of the β-adrenergic hormones epinephrine and norepinephrine as well as the cellular levels of their receptors ADRB1 and ADRB2.We further show that an increase in epinephrine/norepinephrine level inhibited the innate antiviral response in an ADRB1-/2-dependent manner.Mechanistically,epinephrine/norepinephrine stimulation activated the downstream kinase PKA,which catalyzed the phosphorylation of MITA at S241,S243 and T263,inhibiting MITA activation and suppressing the innate immune response to DNA virus.In addition,phosphorylation of VISA at T54 by PKA antagonized the innate immune response to RNA virus.These findings reveal the regulatory mechanisms of innate antiviral responses by epinephrine/norepinephrine and provide a possible explanation for increased host susceptibility to viral infection in stressful and anxiety-promoting situations.
Yi Guo、Xia-Nan Zhang、Shan Su、Zi-Lun Ruan、Ming-Ming Hu、Hong-Bing Shu
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Department of Infectious Diseases,Frontier Science Center for Immunology and Metabolism,Medical Research Institute,Zhongnan Hospital of Wuhan University,Wuhan University
College of Life Sciences,Taikang Center for Life and Medical Sciences,Wuhan University
Research Unit of Innate Immune and Inflammatory Diseases,Chinese Academy of Medical Sciences,Wuhan,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCAMS Innovation Fund for Medical Sciences
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